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VulnerabilityPublished

CVE-2026-124761: RT-Labs P-Net · Incorrect Behavior Order

Affects RT-Labs P-NetSource CVE Database V5

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Not known to be exploited · CVSS 7.1 High : upgrade to 1.0.4 soon.

Data as of 13 Nov 2026, 13:38 UTC

CVSS 4.0 base score
7.1High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (rt-labs)CVSS 4.07.1
Patch
Available – fixed in 1.0.4
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 13 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.

What to do

Upgrade RT-Labs P-Net to 1.0.4.

Affected software

ProductAffectedFixed in
RT-LabsP-NetAffected
  • <1.0.4
Fixed in
  • 1.0.4

AI-suggested

A fix is available in RT-Labs P-Net version 1.0.4. Users should upgrade to version 1.0.4 or later to remediate this vulnerability. No additional mitigation steps are indicated by the vendor advisory.

Description

CVE-2026-124761 is a vulnerability in RT-Labs P-Net versions before 1.0.4 where the device improperly saves a refused IP address configuration. When a DCP Set request is refused due to an active Application Relationship, the device still saves the refused IP address and uses it after restart, potentially causing communication issues with the controller. This can be exploited by a host with adjacent network access while the Application Relationship is active.

References

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